Don't know if I said this already but for rather large project like yours, I would rather mill a negative "pre-mold" from which a plug can be pulled and hand finished.

The plug would be a fuselage or a wing pulled from the "pre-mold" that is hand finished to the highest level that you can achieve including the fittings like connectors, wing joiners fixing screws , control rod exits fairings etc.

When you are happy about the all plane assembly, you put the plugs back in the pre-molds using the pre-molds halves as perfectly fitting parting boards and you build a composite mold from it.

The reason this slightly longer method is used is that perfect fit is very difficult to get even with CNC machines and a combination of machine+ hand finish gives the best results.

Don't know if I said this already but for rather large project like yours, I would rather mill a negative "pre-mold" from which a plug can be pulled and hand finished.

The plug would be a fuselage or a wing pulled from the "pre-mold" that is hand finished to the highest level that you can achieve including the fittings like connectors, wing joiners fixing screws , control rod exits fairings etc.

When you are happy about the all plane assembly, you put the plugs back in the pre-molds using the pre-molds halves as perfectly fitting parting boards and you build a composite mold from it.

The reason this slightly longer method is used is that perfect fit is very difficult to get even with CNC machines and a combination of machine+ hand finish gives the best results.

Don't know if I said this already but for rather large project like yours, I would rather mill a negative "pre-mold" from which a plug can be pulled and hand finished.

The plug would be a fuselage or a wing pulled from the "pre-mold" that is hand finished to the highest level that you can achieve including the fittings like connectors, wing joiners fixing screws , control rod exits fairings etc.

When you are happy about the all plane assembly, you put the plugs back in the pre-molds using the pre-molds halves as perfectly fitting parting boards and you build a composite mold from it.

The reason this slightly longer method is used is that perfect fit is very difficult to get even with CNC machines and a combination of machine+ hand finish gives the best results.

Yes, this would be the way a full production plane would be made. This gives the most detail, best fit, and allows dor all of the extra work to be pre-molded. This extra work is what sets off Cech production quality

I think it's important to remember that the cost of these planes is high and for a builder to do all of that extra work to make a prettier plane will have to charge more to compensate for his time. I dont think those cosmetic details add much speed if any to a DS plane. DS planes also get thrashed quickly. I dont want to have to worry about scratching my planes more than I do already. It's down and dirty for me! And fast of course!

As it should be . Keep up the good work I saw your 160 up close and the workmanship was superb All of your work is clean and I am watching and waiting for this new project to be finished! Im sure it will equal or surpass your previous work Jimmy